CN211948009U - Bridge rotation supporting device - Google Patents

Abstract

The utility model belongs to bridge construction especially indicates a bridge supporting arrangement that turns. Comprises an upper disc and a lower disc; the upper disc and the lower disc are integrally hollow circular rings, the upper disc and the lower disc are coaxially and longitudinally superposed and are assembled in a spherical rotating mode, the surface of the upper disc adjacent to at least the outer side or the inner side of the lower disc is provided with a limiting device, and the limiting device limits the vertical corner generated between the upper disc and the lower disc to exceed a set value. The utility model discloses effectively solved that pouring that exists among the prior art is not real, the pivot can not play the real function scheduling problem when the structure moment of overturning is great, has the supporting stable, do benefit to advantages such as the closely knit degree of guaranteeing its bottom concrete placement.

Description

Bridge rotation supporting device

Technical Field

The utility model belongs to bridge construction especially indicates a bridge supporting arrangement that turns.

Background

The swivel bridge is a bridge constructed by a swivel method, and particularly relates to a bridge which divides a bridge part spanning rivers, roads and railways into two parts, constructs the bridge at two banks or two sides of the roads respectively, completes the construction of the upper structure of the bridge at a construction site, rotates beam bodies on the two banks or two sides of the roads to a working site of the bridge, and folds the two parts into an integral bridge at the working site. The bridge turning technology can convert the operation over the obstacle into onshore or near-ground operation, thereby not only ensuring the safety of engineering construction, but also reducing the influence on traffic, shortening the closing time and lowering the construction cost. With the rapid development of traffic construction projects in recent years, more and more newly-built bridge projects and existing roads, railway lines and rivers have crossed line crossing conditions, and in view of the high safety and small influence on traffic of the swivel method construction, most of newly-built line crossing bridges are constructed by the swivel method at present.

The conventional bridge swivel device mainly comprises a slideway, a supporting leg, a central spherical hinge or a swivel support. The existing swivel bridge engineering is that a bridge is driven to be transferred from a construction site to a working site through rotation of a central spherical hinge or a swivel support, and concrete backfill sealing is carried out on a bearing platform gap after swivel operation is finished. The spherical hinge or the swivel support is positioned at the rotation center of the swivel structure bearing platform and bears main structural load, and a rotating shaft arranged at the center of the support plays a role in limiting overlarge vertical rotation angle and certain overturn resistance. Since the swivel construction technology appears later, the swivel construction technology is gradually and widely used with the development of traffic construction engineering in recent years, and the relevant standard specification of the swivel construction technology is still not perfect, for example, the standard of the department of transportation (technical specification of highway bridge construction) (JTG/T F50-2011) only requires the main technical indexes of the swivel construction. However, in addition to the standard specification requirements, there are still some common drawbacks to the installation and use of swivel devices: when the spherical hinge is adopted, the spherical surface of the lower spherical hinge is required to be used as a template when the concrete of the lower bearing platform is poured, and the condition of incomplete air-holding pouring is easily caused in the pouring process; when the rotating support is adopted, the plane diameter of the large-tonnage support is larger, and the complete compactness is difficult to ensure when a bottom leveling layer is poured; by adopting the spherical hinge or the swivel support, after the swivel operation is finished, concrete can only be backfilled to the area outside the spherical hinge or the swivel support, and the core part cannot be poured in. The spherical hinge or the swivel support is provided with a rotating shaft at the center of the structure for resisting unbalanced moment of the swivel structure, however, the rotating shaft cannot play a practical role when the structure overturning moment is large due to the fact that the acting force arm of the rotating shaft is small. These all leave certain safety hazards to the turning and working of bridges.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a bridge supporting device that turns can effectively solve the technical defect that exists in the construction of current bridge turning, is favorable to turning the backfill seal at center position after the operation is accomplished, ensures later stage bridge safety and is on active service.

The whole technical concept of the utility model is that:

the bridge rotating body supporting device comprises an upper disc and a lower disc; the upper disc and the lower disc are integrally hollow circular rings, the upper disc and the lower disc are coaxially and longitudinally superposed and are assembled in a spherical rotating mode, the surface of the upper disc adjacent to at least the outer side or the inner side of the lower disc is provided with a limiting device, and the limiting device limits the vertical corner generated between the upper disc and the lower disc to exceed a set value.

The applicant needs to say that the main function of the limiting device is to prevent the upper disc and the lower disc from turning over due to an excessively large vertical angle, so that the limiting device can be arranged on the surface of the upper disc on the outer side or the inner side of the lower disc, or on the surface of the upper disc on the outer side or the inner side of the lower disc.

The specific technical concept of the utility model is that:

in order to reduce the rotational friction between the upper disc and the lower disc, the preferred technical implementation means is that the upper disc and the lower disc are assembled in a spherical rotating mode through an annular sliding plate.

In order to prevent external impurities such as rainwater or sand and dust from entering the spherical revolute pair to influence the rotation matching effect, the preferable technical implementation means is that a sealing ring is arranged between the upper disc and the lower disc on two sides of the annular sliding plate.

The more preferable limiting device is realized by adopting one or a combination of a limiting ring and limiting blocks distributed in a circular ring shape.

In order to ensure better stable support and centripetal self-resetting effect in a bearing state, the preferable technical implementation means is that the upper disc is of a circular convex spherical structure, and the lower disc is of a circular concave spherical structure matched with the upper disc.

The applicant needs to state that:

in the description of the present invention, the terms "inside", "outside", "vertical", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of simplifying the description of the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

The utility model discloses a use like this:

the utility model discloses cushion stone of cushion cap under the prefabrication before the installation to set up a plurality of cushion or pre-buried short reinforcement that set up at the cushion top surface, regard as the installation setpoint with the top surface of cushion or short reinforcement, make to have a take the altitude clearance between support bottom surface and the cushion top surface, as the screed-coat. The utility model discloses can integral hoisting according to particular case, also can the on-the-spot substep installation. The template can be built after the installation and the superstructure is poured, a grouting pipeline leading to the center of the supporting device needs to be reserved when the superstructure is poured, bridge turning operation is carried out after superstructure construction is completed, concrete for backfilling is pressed into a central area of the supporting device and a bearing platform gap outside the supporting device through the reserved grouting pipeline after turning operation is completed, pouring compactness is guaranteed, firm support is formed, and bridge service safety is guaranteed.

The utility model discloses what obtain shows technological progress lies in:

1. the utility model discloses a structure of hanging wall and the coaxial vertical setting of lower wall, for the spherical surface contact between hanging wall, slide and the lower wall, have fine stable support and centripetal from reset function.

2. The utility model discloses a be equipped with stop device on the hanging wall, when producing vertical corner, through hanging wall stop device and lower wall edge spacing, effectively avoided because of the too big phenomenon of toppling that leads to of vertical corner.

3. Under the equal load tonnage condition, the utility model provides an annular slide compares with current circular slide, and its centre of a circle contained angle is littleer, has reduced the friction torque when turning and pull to a certain extent.

4. The utility model discloses compare with current ball pivot or swivel support structure, this strutting arrangement's of equal bearing capacity condition cross section is narrower, more does benefit to the closely knit degree of guaranteeing its bottom concrete placement. The whole plane structure of the supporting device is annular, so that the backfilling and the sealing of the central part after the rotation operation is finished are facilitated, and the safe use of the bridge in the later period is ensured.

5. The adoption of the sealing device effectively prevents external sundries from entering the spherical revolute pair, and ensures the flexible operation and stable work of the spherical revolute pair.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a partially enlarged view of a portion a of fig. 1.

Fig. 3 is a schematic structural diagram of bridge swivel construction by using a center spherical hinge in the prior art.

Fig. 4 is a schematic structural diagram of a bridge swivel construction using a swivel support in the prior art.

Fig. 5 is a schematic structural view for bridge rotation construction.

The reference numbers in the drawings are as follows:

1. hanging the plate; 2. a seal ring; 3. an annular slide plate; 4. a bottom wall; 5. a limiting device.

Detailed Description

The present invention is further described with reference to the following examples, which should not be construed as limiting the scope of the present invention, but the scope of the present invention is defined by the following claims, and any equivalent technical means made according to the description should not be construed as departing from the scope of the present invention.

Examples

The overall structure of the present embodiment is shown in the figure, which includes an upper plate 1 and a lower plate 4; the upper disc 1 and the lower disc 4 are integrally hollow circular rings, the upper disc 1 and the lower disc 4 are coaxially and longitudinally superposed and are assembled in a spherical rotating mode, limiting devices 5 are arranged on the surfaces of the upper disc 1 adjacent to the outer side and the inner side of the lower disc 4, and the limiting devices 5 limit vertical corners generated between the upper disc 1 and the lower disc 4 to exceed set values. The limiting device 5 and the upper disc 1 are integrally formed.

The upper disc 1 and the lower disc 4 are assembled in a spherical rotating mode through the annular sliding plate 3.

And a sealing ring 2 is arranged between the upper disc 1 and the lower disc 4 at two sides of the annular sliding plate 3.

The limiting device 5 adopts a limiting ring.

The upper disc 1 is in a circular convex spherical structure, and the lower disc 4 is in a circular concave spherical structure matched with the upper disc.

Claims (5)

1. The bridge rotation body supporting device is characterized by comprising an upper disc (1) and a lower disc (4); the upper disc (1) and the lower disc (4) are integrally hollow circular rings, the upper disc (1) and the lower disc (4) are coaxially and longitudinally superposed and are assembled in a spherical rotating mode, a limiting device (5) is arranged on the surface of the upper disc (1) adjacent to at least the outer side or the inner side of the lower disc (4), and the limiting device (5) limits the vertical corner generated between the upper disc (1) and the lower disc (4) to exceed a set value.

2. The bridge swivel support device according to claim 1, characterized in that the upper disc (1) and the lower disc (4) are spherically rotatably assembled by a circular sliding plate (3).

3. The bridge swivel support device according to claim 2, characterized in that a sealing ring (2) is arranged between the upper disc (1) and the lower disc (4) at both sides of the annular sliding plate (3).

4. The bridge swivel support device according to claim 1, wherein the limiting device (5) is one or a combination of a limiting ring and limiting blocks distributed in a circular ring shape.

5. The bridge swivel support device according to any one of claims 1-4, characterized in that the upper disc (1) is a circular convex spherical structure and the lower disc (4) is a circular concave spherical structure adapted to the upper disc.

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